点击下方单词,选择对的这个单词
点击下面链接下载与本句相关的学习资源，包括PDF教材和音频练习，方便课后复习：
名词
生活对话
1. a keyboard instrument that is played by depressing keys that cause hammers to strike tuned strings and produce sounds
Synonym: pianoforteforte-piano
2. (music) low loudness
Synonym: pianissimo
多通过句子记忆单词，而不是单独死记硬背。
